Have freight charges get rolled into the inventory item's avr cost utilizes a feature in MAS90 called "Landed Cost".
Key components: (1) Inventory Maintance, options tag: Set Landed Cost checkbox on.
(2) P/O Data Entry, when item is entered on P/O, LC (landed cost) checkbox should be now defaulted on (it defaults from your inventory maintenance setting--step 1)
(3) Landed Cost Type maintenance - P/O Setup menu. Setup the types of misc. costs you wish to track & how these costs are allocated.
(4) When entering a receipt of goods against a p/o w/items marked for landed cost tracking, there should be a "Landed Cost" button in the upper, right-hand corner of the Receipt of Goods "Totals" screen. Click it and you can now select a Landed Cost code and an amount. The amount will be applied (allocated) across all items on this P/O that are marked w/landed cost being "on".
Hope this helps!